Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency

Cheng Liang Huang; Hui Liang Chen; Chen Cher Wu

doi:10.1016/S0025-5408(01)00652-3

Improved high Q value of CaTiO₃-Ca(Mg_1/3Nb_2/3)O₃ solid solution with near zero temperature coefficient of resonant frequency

Cheng Liang Huang, Hui Liang Chen, Chen Cher Wu

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

55 Citations (Scopus)

Abstract

The crystal structures and the microwave dielectric properties of (1-x)CaTiO₃-xCa(Mg_1/3Nb_2/3)O₃ perovskite ceramic system have been investigated. (1-x)CaTiO₃-xCa(Mg_1/3Nb_2/3)O₃ solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO₃-0.66Ca(Mg_1/3Nb_2/3)O₃ applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant ε_r ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τ_f value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO₃-0.66Ca(Mg_1/3Nb_2/3)O₃ ceramics.

Original language	English
Pages (from-to)	1645-1652
Number of pages	8
Journal	Materials Research Bulletin
Volume	36
Issue number	9
DOIs	https://doi.org/10.1016/S0025-5408(01)00652-3
Publication status	Published - 2001 Jul

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/S0025-5408(01)00652-3

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title = "Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency",

abstract = "The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.",

author = "Huang, {Cheng Liang} and Chen, {Hui Liang} and Wu, {Chen Cher}",

note = "Funding Information: This work was supported by the National Science Council of the Republic of China under Grant NSC-89-2216-E-006-066.",

year = "2001",

month = jul,

doi = "10.1016/S0025-5408(01)00652-3",

language = "English",

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pages = "1645--1652",

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T1 - Improved high Q value of CaTiO3-Ca(Mg1/3Nb2/3)O3 solid solution with near zero temperature coefficient of resonant frequency

AU - Huang, Cheng Liang

AU - Chen, Hui Liang

AU - Wu, Chen Cher

N1 - Funding Information: This work was supported by the National Science Council of the Republic of China under Grant NSC-89-2216-E-006-066.

PY - 2001/7

Y1 - 2001/7

N2 - The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.

AB - The crystal structures and the microwave dielectric properties of (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 perovskite ceramic system have been investigated. (1-x)CaTiO3-xCa(Mg1/3Nb2/3)O3 solid solution exhibited orthorhombic crystal structures for all compositions. With x = 0.66, a new microwave dielectric ceramic material 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 applicable to microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 48, a Q×f values ∼ 32,500 (at 6.7 GHz) and a τf value ∼-2 ppm/°C at 1450°C for 3 h. Further improvement of the Q×f value can be achieved by extending the sintering time to 6 h. It reveals a higher Q×f value of 34,000 (at 6.7 GHz) without degrading other microwave dielectric properties of 0.34CaTiO3-0.66Ca(Mg1/3Nb2/3)O3 ceramics.

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Improved high Q value of CaTiO₃-Ca(Mg_1/3Nb_2/3)O₃ solid solution with near zero temperature coefficient of resonant frequency

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